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Update JRuby examples to use version 10 #2626

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Oct 3, 2025
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Update JRuby examples to use version 10 #2626

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6 changes: 3 additions & 3 deletions jruby/content.md
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Expand Up @@ -15,7 +15,7 @@ JRuby leverages the robustness and speed of the JVM while providing the same Rub
## Create a `Dockerfile` in your Ruby app project

```dockerfile
FROM %%IMAGE%%:9
FROM %%IMAGE%%:10

# throw errors if Gemfile has been modified since Gemfile.lock
RUN bundle config --global frozen 1
Expand Down Expand Up @@ -44,13 +44,13 @@ $ docker run -it --name my-running-script my-ruby-app
The above example `Dockerfile` expects a `Gemfile.lock` in your app directory. This `docker run` will help you generate one. Run it in the root of your app, next to the `Gemfile`:

```console
$ docker run --rm -v "$PWD":/usr/src/app -w /usr/src/app %%IMAGE%%:9 bundle install --system
$ docker run --rm -v "$PWD":/usr/src/app -w /usr/src/app %%IMAGE%%:10 bundle install --system
```

## Run a single Ruby script

For many simple, single file projects, you may find it inconvenient to write a complete `Dockerfile`. In such cases, you can run a Ruby script by using the Ruby Docker image directly:

```console
$ docker run -it --rm --name my-running-script -v "$PWD":/usr/src/myapp -w /usr/src/myapp %%IMAGE%%:9 jruby your-daemon-or-script.rb
$ docker run -it --rm --name my-running-script -v "$PWD":/usr/src/myapp -w /usr/src/myapp %%IMAGE%%:10 jruby your-daemon-or-script.rb
```